LOCALITIES. 229 



204. (For stratigraphic position and association, see p. 139.) Lower Ordovician: Pogonip limestone on the 

 lower part of the eastern slope of the ridge east of Hamburg Ridge, facing Secret Canyon road. Eureka dis- 

 trict [Hague, 1892, Atlas], Eureka County, Nev. (G. D. Walcott, 1880). 



*Syntrophia nundina. 



205. (For stratigraphic position and association, see p. 139.) Passage beds between the Upper Cambrian and the 

 Ordovician: Siliceous limestone on Roundtop Mountain, Eureka district [Hague, 1892, Atlas], Eureka 

 County, Nev. (Arnold Hague and J. P. Iddings, 1880). 



Obolus msera. 



*Obolus (Westonia) sp. undt. b. 



Lingulella pogonipensis. 



*Acrotreta? cancellata. 

 Eoorthis hamburgensis. 



206a. (For stratigraphic position and association, see p. 139.) Passage beds between the Upper Cambrian and the 

 Ordovician: Sandy limestone on Hoosac Mountain, Eureka district [Hague, 1892, Atlas], Eureka County, 

 Nev. (C. D. Walcott, 1880). 

 Acrotreta idahoensis alta. 



209. (For stratigraphic position and association, see p. 139.) Lower Ordovician: Pogonip limestone on the 

 west side of Goodwin Canyon, Eureka district [Hague, 1892, Atlas], Eureka County, Nev. (C. D. Walcott, 

 1880). 

 Syntrophia nundina. 



211. (For stratigraphic position and association, see p. 139.) Passage beds between the Upper Cambrian and the 

 Ordovician: Siliceous Pogonip limestone on spur of Hamburg Ridge extending southwest from Wood Cone, 

 Eureka district [Hague, 1892, Atlas], Eureka County, Nev. (Arnold Hague, J. P. Iddings, and C. D. Walcott, 

 1880). 

 Lingulella pogonipensis. 



214a (see 313k). (For stratigraphic position and association, see p. 139.) Ordovician: Near the base of the Pogonip 

 limestone. White Pine district. White Pine County, Nev. (C. D. Walcott and C. H. H., 1882). 

 *Obolus sp. undt. c. 



214b (see 313k). (For stratigraphic position and association, see p. 139.) Lower Ordovician: Limestones near the 

 middle of the Pogonip limestone, White Pine district. White Pine County, Nev. (C. D. Walcott and C. H. H., 

 1882). 

 Lingulella manticula. 



216a. Ordovician: Limestone at Fossil Butte, 10 miles north of Hyko, Lincoln County, Nev. (C. D. Walcott, 

 1885). 

 Huenella sp. * 



220a. Ordovician: Shales of the "Upper Sillery" (Lauzon of Logan) on Chaudiere River, at the Grand Trunk 

 Railroad bridge. Province of Quebec, Canada (C. D. Walcott, 1889). 

 •Lingulella ellsi. 

 *Acrothele pretiosa. 



221. (For stratigraphic position and association, see p. 139.) Ordovician: Pogonip limestone, below the white 

 quartzite, at the western base of Lone Mountain, Keyes Valley, 18 miles (28.8 km.) northwest of Eureka, 

 Eureka County, Nev. (C. D. Walcott, 1880). 

 Acrotreta sp. undt. 



227. Lower Ordovician: Limestone near Fort Cassin, Addison Comity, Vt. (W. P. Rust, 1887). 

 *Syntrophia lateralis. 



Localities 300-S96z, arbitrarily numbered^ 



300 [Matthew, 1886, p. 37]. (For stratigraphic position and association, see p. 132.) Middle Cambrian: Shaly sand- 



stones, possibly of Division Id of Matthew, on Long Reach, St. John River, Kings County, New Brunswick. 

 *Acrotreta baileyi Matthew. 

 Ptychoparia robbi ? (Hartt). 



301 (references follow species; see 2h). (For stratigraphic position and association, see p. 133.) Middle Cambrian: 



In sandstones of Division lb2 of the " Protolenus zone" [Matthew, 1895a, p. 108], on Hanford Brook, St. 



John County, New Brunswick. 

 Acrothele matthewi lata [Matthew, 1886, p. 42]. 

 Acrotreta baileyi? [Matthew, 1886, p. 37]. 

 Acrotreta gemmula [Matthew, 1895a, p. 126]. 

 *Trematobolus insignis [Matthew, 1895a, p. 123]. 



*Trematobolus pristinus [Matthew, 1895a, p. 122]. 

 *Beyrichona papilio [Matthew, 1886, p. 66]. 

 *Beyrichona tinea [Matthew, 1886, p. 66]. 



" See the explanatory paragraphs on pp. 160-161. 



